VCO resonance tuning
US6784754B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/099
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Techniques are provided for compensating for variations in capacitance of capacitors used in resonant circuits, particularly varactors used in voltage-controlled oscillators. Indications of actual varactor capacitances are used to determine which of several inductances to use in the resonant circuit with the varactor. The inductances may be composed of a bondwire inductance, and may also be composed of one or more coil inductors. Based on the determined capacitance indication, a bondwire is connected from a common bondpad to a selected bondpad to complete the resonant tank circuit such that an LC product of the tank circuit is within a desired or acceptable LC product range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.